It is a space jetpack that is placed behind the astronaut and is filled with compressed nitrogen. The astronaut controls 24 micro-nozzles through the switch on the armrest and injects compressed nitrogen into different sizes. Create reverse thrust. Move in all directions. Mainly to enable astronauts to move smoothly and complete various tasks during space walks.
In order to help astronauts get off the vehicle, researchers designed a "backpack" for the astronauts. The name of the backpack is the M509 mobile device.
The M509 power unit weighs 115.66 kg, is 105.41 cm long, 68.58 cm wide and 38.83 cm thick. The backpack is equipped with a high-pressure nitrogen bottle. There are 14 nozzles on the top, bottom, left and right of the backpack. After opening the nozzles, the astronauts can not only move up, down, left, and right, but also roll and rotate. The main advantage of this device is the ability to correctly position the body and keep the astronaut in any position.
With the expansion of astronauts’ outward missions, in order to facilitate their movements, mobile devices for vehicle activities have also been specially developed, allowing astronauts to accurately control their position and movement during space travel. direction, and equip them conveniently and freely. Overboard operations such as maintenance, structural assembly, payload placement and recovery. While early vehicle-mounted mobile controls were larger and mounted on the space suit's eco-friendly bio-protective backpack (like a "big box"), improved products are lighter and more compact.
Because the universe is a hypergravity environment, astronauts can float while walking in space, move their arms with one hand or use special body movement tools to move their bodies in space.
The outer spacesuit is the only personal safety equipment astronauts need to leave the cabin. In fact, what looks like a big box behind the astronaut is actually an important part of the vehicle-mounted space suit, called the portable environmental control and life support system (called the portable environmental control and life support system).